Answer:
c) A grudge that expresses itself is eliminated, while a grudge that goes unexpressed grows more severe
Explanation:
:)
Based on the given sentence above, the verb that is used here is "will have been traveling". This verb is in the tense form of f<span>uture perfect progressive tense, meaning that the action here is in the future and it is ongoing that will happen in some specified time in the future. Hope this helps.</span>
